package com.dxyxx.utils;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.http.Header;
import org.json.JSONArray;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;
import br.com.pierry.simpletoast.SimpleToast;

import com.dxyxx.R;
import com.http.HttpUtil;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.ta.utdid2.android.utils.StringUtils;

public class UpdateManager {

	private Context mContext;
	public static double version = 1.2;
	//提示语
	private String updateMsg = "有最新的软件包哦，亲快下载吧~";

	//返回的安装包url
	private String apkUrl = "http://dxyxx.com/apk/";
	//DaXiang-1.2.apk

	private Dialog noticeDialog;

	private Dialog downloadDialog;
	/* 下载包安装路径 */
	private static String savePath = Environment.getExternalStorageDirectory().getPath() + "/dxyxx/";

	private static String saveFileName = savePath + "";

	/* 进度条与通知ui刷新的handler和msg常量 */
	private ProgressBar mProgress;

	private static final int DOWN_UPDATE = 1;

	private static final int DOWN_OVER = 2;

	private int progress;

	private Thread downLoadThread;

	private boolean interceptFlag = false;

	public UpdateManager(Context context) {
		this.mContext = context;
		try {
			version = Double.valueOf(context.getPackageManager().getPackageInfo(context.getPackageName(), 0).versionName);
		} catch (NumberFormatException e) {
			e.printStackTrace();
		} catch (NameNotFoundException e) {
			e.printStackTrace();
		}
	}

	//外部接口让主Activity调用
	public void checkUpdateInfo() {
		HttpUtil.get("version/getLatestVersion", new AsyncHttpResponseHandler() {

			@Override
			public void onSuccess(int arg0, Header[] arg1, byte[] arg2) {
				String response = new String(arg2);
				if (!StringUtils.isEmpty(response)) {
					try {
						JSONArray array = new JSONArray(response);
						double v = (Double) array.getJSONObject(0).get("versions");
						if (v > version) {
							version = v;
							apkUrl = (String) array.getJSONObject(0).get("downloadLink");
							showNoticeDialog();
						} else {
							//Toast.makeText(mContext, "当前已经是最新版本！", Toast.LENGTH_SHORT).show();
						}
					} catch (Exception e) {
						e.printStackTrace();
						SimpleToast.info(mContext, "稍等下，算不出版本数据");
					}
				}
			}

			@Override
			public void onFailure(int arg0, Header[] arg1, byte[] arg2, Throwable arg3) {
				SimpleToast.info(mContext, "稍等下，网络故障");
			}
		});
	}

	private void showNoticeDialog() {
		AlertDialog.Builder builder = new Builder(mContext);
		builder.setTitle("软件版本更新");
		builder.setMessage(updateMsg);
		builder.setPositiveButton("下载", new OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				dialog.dismiss();
				showDownloadDialog();
			}
		});
		builder.setNegativeButton("以后再说", new OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				dialog.dismiss();
			}
		});
		noticeDialog = builder.create();
		noticeDialog.show();
	}

	private void showDownloadDialog() {
		AlertDialog.Builder builder = new Builder(mContext);
		builder.setCancelable(false);
		builder.setTitle("软件版本更新");

		final LayoutInflater inflater = LayoutInflater.from(mContext);
		View v = inflater.inflate(R.layout.progress, null);
		mProgress = (ProgressBar) v.findViewById(R.id.progress);

		builder.setView(v);
		builder.setNegativeButton("取消", new OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				dialog.dismiss();
				interceptFlag = true;
			}
		});

		downloadDialog = builder.create();
		downloadDialog.show();

		downloadApk();
	}

	private Runnable mdownApkRunnable = new Runnable() {
		@Override
		public void run() {
			try {
				String apkName = "dxyxx-" + version + ".apk";
				URL url = new URL(apkUrl);

				HttpURLConnection conn = (HttpURLConnection) url.openConnection();
				conn.connect();
				int length = conn.getContentLength();
				InputStream is = conn.getInputStream();

				File file = new File(savePath);
				if (!file.exists()) {
					file.mkdir();
				}
				String apkFile = saveFileName + apkName;
				saveFileName = saveFileName + apkName;
				File ApkFile = new File(apkFile);
				FileOutputStream fos = new FileOutputStream(ApkFile);

				int count = 0;
				byte buf[] = new byte[1024];

				do {
					int numread = is.read(buf);
					count += numread;
					progress = (int) (((float) count / length) * 100);
					//更新进度
					mProgress.setProgress(progress);
					if (numread <= 0) {
						//下载完成通知安装
						installApk();
						break;
					}
					fos.write(buf, 0, numread);

				} while (!interceptFlag);//点击取消就停止下载.

				fos.close();
				is.close();
				downloadDialog.dismiss();
			} catch (MalformedURLException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}

		}
	};

	/**
	 * 下载apk
	 * 
	 * @param url
	 */

	private void downloadApk() {
		downLoadThread = new Thread(mdownApkRunnable);
		downLoadThread.start();
	}

	/**
	 * 安装apk
	 * 
	 * @param url
	 */
	private void installApk() {
		File apkfile = new File(saveFileName);
		if (!apkfile.exists()) {
			return;
		}
		Intent i = new Intent(Intent.ACTION_VIEW);
		i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive");
		mContext.startActivity(i);

	}
}
